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Aonix
Offers consultancy and training services for real-time and embedded software development. Includes downloadable demos, and evaluation versions available by request.
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BeKaffe
Provides screenshots, downloadable releases and notes, FAQs and other related documents on the project.
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Classpath Extensions
Presents the GNU classpath extensions project that creates free editions of the extension libraries in Java.
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GNU Classpath
Recounts updated information about the project’s versions that are available for downloading. Includes release notes, answers to frequently asked questions, and success stories.
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GNU Compiler for the Java Programming Language
Chronicles news and other updates on the source code compiler. Contains FAQs, a GCJ manual and various instructional documents.
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IBM: Developer Kits
List of downloadable releases of development systems for the Java programming language with guides that consider the kits’ security and platforms.
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Java Virtual Machine
Provides information about the foundation of the Java platforms called the JVM. With FAQs, updates associated news and downloadable versions of its software.
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JC Virtual Machine
Implementation of the JVM that is able to convert class files into C source files with its list of features and other related documents.
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Jikes
Presents the Java-based compiler that transforms source files in the Java programming language. With FAQs, downloads, and viewable bugs.
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JN Bridge
Features the latest product called JNBridge Pro with discussions on its performance and interoperability. Comprises of white papers, demos, case studies, and examples for added information.
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Kaffe
Defines the implementation of the JVM with downloadable release versions. Contains answers to several frequently asked questions, list of ports and projects, and a gallery of screenshots.
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Open Run-time Platform
Contains downloadable files for the ORP open-source implementation. Each file includes a release note.
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SourceForge: JJOS
Offers a free downloadable open Java-based operating system that merges jJOS kernel and decaf VM.
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World Wide Walrus: Java for the Amiga
Contains introductory information, downloads with installation discussions, and projects and packages about the Amiga.